Digestive system

What is the main function of the digestive system?

• To produce oxygen

• To break down food and absorb nutrients

• To pump blood throughout the body

• To remove waste from the kidneys

Where does digestion begin?

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What is the role of the stomach in digestion?

• Absorbs water from food

• Breaks down food using acids and enzymes

• Produces saliva

• Stores waste before elimination

Which organ is responsible for absorbing most nutrients?

• Stomach

• Small intestine

• Large intestine

• Liver

What does the liver do in digestion?

• Stores waste

• Produces bile to help digest fats

• Absorbs nutrients

• Breaks down food with stomach acid

What is peristalsis?

• The breakdown of food in the mouth

• The movement of food through the digestive tract by muscle contractions

• The production of digestive enzymes

• The release of bile from the liver

What prevents food from going down the windpipe?

• Stomach acid

• The esophagus

• The epiglottis

• The pancreas